Your car's broken down. Your phone's out of battery. Hell, it's always out of battery these days. What do you do? Well, if Xpal Power has anything to do with it you'll just pick up your Spare One.

Designed specifically for emergency situations, this super-cheap phone runs from a single AA battery reports Engadget from CES. Xpal claims that the the SpareOne can hold its charge if unused for 15 years.

Even better, it's dual-band, and is designed to transmit its location alongside its call ID. Each phone comes with a normal SIM and a MicroSIM card adaptor (and a battery! woop!) and costs $49.99. That's pretty cheap for peace of mind. [Spare One via Engadget]